RAW files?

[tee boy]

Can anybody shead any light on the subject of RAW files? I was thinking of turning some audi into RAW format, to enable me to process it using Photoshop and other image software. However, Wavelab wont save in this format (which is funny cuz it will open them!). I have some software to convert wav to raw, but only at 8 bit. Its this the norm or something?

[kybernaut]

Raw PCM is just the audio data - without any header specifying the sample rate/bit depth etc.

And btw: This doesn't have ANYTHING to do with Raw images...


--kybernaut

[tee boy]

Mate, whats this I keep hearing about where you can turn wav's into RAW files and open them up in imaging software? Iv heard people mention this technique numorous over the past couple of months, but not sorted out how to do it. Is there a certain type of raw file which can be opened in any app?

[stefancrs]

There are no "types" of RAW. raw is just the data written down directly, no headers, no nothing extra.

Try making a 8bit (greyscale) picture and save it as raw, open it up as a sound in for instance cool edit (open as 8bit unsigned iirc) and you will have a pitched sound. The pitch comes due to the fact that a picture has lines, the base frequency (in samples) will be the picture width. Making a decent figure out of an arbitrary sound is more difficult, since you wouldn't know what width to specify when you open the raw file in for instance photoshop.

[tee boy]

Sound, looks like i had my wires crossed a wee bit. What i had in mind was to maybe take a sound, open it in the image editor, then use another sound (opened as an image) to filter it. I imagined it working out like some funking spectral vocoder type effect!

Not to worry though, i just downloaded the demo of Atmogen, and it looks as though i'll be able to do most of this stuff with that.

Thanks

[stefancrs]

What you just described would just be ring modulation kindof. Depends on what you mean by filtering an image with another image.